Monumental Sterling and Turquoise Vintage Necklace and Pendant

I am hoping one of my fellow dealers can help me identify the artist who made this amazing necklace. It is marked sterling on the chain and the other parts test as sterling. As seen in the pictures, the bottom large piece can be removed and worn on a chain. The bottom pendant portion is 2 inches long and weighs 34 grams. The necklace is adjustable and is able to be 19 inches. The turquoise piece is 1 1/4 inches. It weighs 71 grams so the necklace itself weighs over 100 grams. It is in excellent condition and would be wonderful for wear and for the collector.